Cap for valves, stay-bolts, and the like.



H. P. KRAFT 6: M. G. SGHWEINERI'. GAP F08 VALVES, STAY BOLTS, AND THE,LIKE.

APPLIOATIOK FILED APLB, 1907.

latented Dec. 29, 1914.

FIG. 2.

' INVENTORS:

By Atfomeys, Mai w wlimssse; 17 ml flu? valve, the latter case the.mnmrror sen-saga in, nNnnnxIni -mn cnnntns scnwnmnnr, orwnsr nononnn,nnw a'snsnr.

' car non vnrvn's, sramncnrs, ANDTHE'LIKE,

Specification of Letters latent.

Patented Dec. 29. 1914.

Application filed A' rii 5,1907. seriai io. 366,708.

5 Miixnirnimim CHARLES Scnwmnnn'r, resid- West Hoboken, in the countyofEnd-- 7 -United States, have jointly invented certain new and usefulImprovements in Caps for ioValves, Stay-Bolts, andthe like, of whichthe-following is a specification.

- invention relates to caps which are vadapted to-bejscrewed' upontirejvalves, stay- -bolts,,or the like, in which" means are employed'forretaining or locking the cap in place; some of its ifeatures,however,our

invention is applicable to lock-nutsand devices. 7 p the drawings.illustrating our inven- 2o tion,-F-igure. l is view of our inventionapplied to an'automobile tire valve, the valve being shown inelevationand the cap in secion. ig. 2 is an elevationof the cap. l ig. a view'showing'the parts of the 'cap'be 25, fore assembling, the nut beingshown partly 'in' irertical' section, and the washer being own inelevation. Fig. i: is a bottom or under side view of the cap proper.Fig. 5 is atop view of the detached washer.

Referring to the drawings, let A indicate a pneumatic'tire valve ofcommon construc "tion which is connected with the tire andextends'throu'ghtherim C.

D indicates the cap as a wholewhlch 1s 35 provided with'internalscrew-threads adapted to engage the outer wall of the valve to hold, thelatter against inward movement and to protect itfrom dust, injury, etc.

In the construction shown the cap comprises a nut E having fixed to itsupper end a sheet-metal cap F which is'provided with an outwardlyextending flange at its lower end engaged by an inwardly extendingflange uponthenut. The nut E has SWlV- 45 eled to its lower end a washerG which is designed to press against the rim C, and to beheld againstrotation either by its frictional contact with the rim, or by, engage-H- formed on the washer is formed? on its interior with one or morestraight faces I, as shown in Fig. 5.

meat withthe fiat wall The'nut E-is provided with a recessJ ,1 and 4;)into which extends a re-.

- sonand State of New Jersey, citizens of they (luced portion or axialflange K formed .uponthe upper face oflthe' washer. The recessJ 1s of.sufiicien'tly larger diameter than V :the flange- K to permit-theintrodu tween such fiange-and'the Wallof the. recess of'a spring-L, Theflange K is formed with a'series or notches M- on its outer side, whichare adapted to receive an inwardly project Zing-portion N formed uponthe spring L.

The spring is made of sur'hcient stiffness t0 prevent the accidental'reverse' rotation of the-nut when the latter is' screwed home, but

is suiiicientl yielding to 1 permit relative movemento the parts by awrench or other tool. The ends of the spring are bent angularly to thebody portion and engage notches D formed upon the wall of the recess. J.While-- one or twoof the notchesO would be sufiicient in theconstruction shown, we;

prefer to forma series of'notches, in order that, f the spr ng should byany means hecome disengaged, it will, after a slight rotative movement,catch in one or more of the succeeding notches.

An important feature of our invention is its -extreme simpliclty andeconomy of manufacture. By. arranging the spring so that it makes alateral engagement with the nut and washenwe are enabled to form suchnotches so that they extend axially of the-parts, by the use ofadrifting tool. This enables us to avoid the expensiveoperation ofswaging or cutting such notches in the upper and lower faces of thewasher and nut, as has been heretofore proposed. By the presentinvention the entire series of notches in each part can be cut in asingle operation. By this means the nut may as cheaply be provided witha series of notches O as with a single notch or a pair of notcher Whilewe-have shown our invention as applied to a cap for "tire valves, it maybe utilized as a cap for stay-bolts or the like without furthermodification than a proper proportioning of the parts.

Our invention is not limited to the .use of devices which form aprotecting. covering for the parts to which they are attached,

outmay. also be applied to lock nuts or similar devices in wlnchthe.protecting feature is omitted. It is obvious that instead of using awasher in connection with the de-- vice, a second nut may be employed.It will also be understood that the construcextension on said washertion herein shown and described may 'be considerably modified withoutdeparting from the invention.

What we claim is z- 1. A cap for tire valves, stay-bolts or the like,having a cap portion at one end thereof, a nut fixed to said capportion, a washer swiveled to said nut, spring interposed be tween saidwasher and nut and adapted to laterally engage both said parts, and aseries of axiallyarranged notches formed on said nut and washer adaptedto receive said spring. g

2. A cap for tire valves, stay-bolts or the like, having a cap-portionat one end thereof, a nut fixed to said'cap-portion having a re'-' cessupon its lower face, a washer swiveled to said nut having a reducedextension adapted to fit within the recess within said nut, a springinterposed between said nut and the extension on said washer and adaptedto laterally engage both said parts, and a series of notches upon saidnut and the adapted to be engagedby said spring to preventrelativerotary movement between said nut and washer. cap for tire valves,stay-bolts or the like, having a cap-portion at one end thereof, a nutfixed to said cap-portion having a recess upon its lower face and acircular flange, a washer swiveled to said nut having an extensionadapted to fit within the recesswithin said nut, and a circularoutwardly extending flange upon its perlphery, a spring interposedbetween said nut and theIeXtension on said washer and adapted tolaterally engage both said parts, and a series of notches upon said nutand the extension on said washer adapted to be engaged by'said' springto prevent relative rotary movement between said nut and washer, saidflange upon said nut extending over 'sai flange on said washer so as toform a protecting covering for the swivel joint.

4. A cap for tire valves, stay-bolts or the like, comprising a nuthaving a recessed lower face, a washer swi'veled to said nut having areduced extension adapted to fit Within the recess in the lower face ofsaid nut, and a spring interposed between said nut and the extension onsaid Washer within the recess in said nut, and adapted to laterallyengage both said parts for preventingrelative displacement.

In witness whereof, we have hereunto signed our names in the presence oftwo subscribing witnesses.

HENRY P. KRAFT. I MAXIMILLIAN CHARLES scuwnurar.

Witnesses:

EUGENE V. MYERS, THEODORE T. SNELL.

